I believe that there is a lot of sense in what you are saying, imagine a nation collecting money from their excess reserves to buy bitcoin at a rate of $ 7K and in five years the bitcoin increased to $ 50k, That would be a very profitable investment for the country. Bitcoin can be said to be a state treasure for bitcoin keepers who do not understand or do not think bitcoin is that it probably will not say that. To be honest, I believe we are still in the prime of development when it comes to the cryptography industry so I do not think the cryptographic industry will replace the fiat currency any time in the future. However, this area has the potential to change the way we live today on a large scale, it can optimize the traditional infrastructure will bring more benefits to the economy in general at the level international. Because market prices are not a direction that can cause growth, market prices will fall.